Answers

2014-06-12T15:42:19+08:00
False. because 4*5 is equal to 20 and the other is equal to 80 so, False
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2014-06-12T15:52:48+08:00
False
because 2 * (4 * 5) is 40
or 
N = 2 * (4 * 5)
N = 2 * 20
N = 40
while 8 * 10 is 80
40 = 80 is False
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